diff options
Diffstat (limited to 'package/base-files-network/files/usr/share/udhcpc/default.script')
| -rwxr-xr-x | package/base-files-network/files/usr/share/udhcpc/default.script | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/package/base-files-network/files/usr/share/udhcpc/default.script b/package/base-files-network/files/usr/share/udhcpc/default.script new file mode 100755 index 000000000..8dbff4747 --- /dev/null +++ b/package/base-files-network/files/usr/share/udhcpc/default.script @@ -0,0 +1,161 @@ +#!/bin/sh +[ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1 + +. /etc/functions.sh +include /lib/network +RESOLV_CONF="/tmp/resolv.conf.auto" + +change_state () { + [ -n "$ifc" ] || return + uci_revert_state "$1" "$2" "$3" "$4" + uci_set_state "$1" "$2" "$3" "$4" +} + +set_classless_routes() { + local max=128 + local type + while [ -n "$1" -a -n "$2" -a $max -gt 0 ]; do + [ ${1##*/} -eq 32 ] && type=host || type=net + echo "udhcpc: adding route for $type $1 via $2" + route add -$type "$1" gw "$2" dev "$interface" + max=$(($max-1)) + shift 2 + done +} + +setup_interface () { + local old_ip + local old_broadcast + local old_subnet + local old_router + local old_dns + local user_dns + local user_router + local user_metric + + [ -n "$ifc" ] && { + old_ip="$(uci_get_state network "$ifc" ipaddr)" + old_broadcast="$(uci_get_state network "$ifc" broadcast)" + old_subnet="$(uci_get_state network "$ifc" netmask)" + } + + [ "$ip" != "$old_ip" ] \ + || [ "${broadcast:-+}" != "$old_broadcast" ] \ + || [ "${subnet:-255.255.255.0}" != "$old_subnet" ] && { + echo "udhcpc: ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}" + ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+} + + change_state network "$ifc" ipaddr "$ip" + change_state network "$ifc" broadcast "${broadcast:-+}" + change_state network "$ifc" netmask "${subnet:-255.255.255.0}" + } + + + # Default Route + [ -n "$ifc" ] && { + change_state network "$ifc" lease_gateway "$router" + old_router="$(uci_get_state network "$ifc" gateway)" + user_router="$(uci_get network "$ifc" gateway)" + user_metric="$(uci_get network "$ifc" metric)" + [ -n "$user_router" ] && router="$user_router" + } + + [ -n "$router" ] && [ "$router" != "0.0.0.0" ] && [ "$router" != "255.255.255.255" ] && [ "$router" != "$old_router" ] && { + echo "udhcpc: setting default routers: $router" + + local valid_gw="" + for i in $router ; do + route add default gw $i ${user_metric:+metric $user_metric} dev $interface + valid_gw="${valid_gw:+$valid_gw|}$i" + done + + eval $(route -n | awk ' + /^0.0.0.0\W{9}('$valid_gw')\W/ {next} + /^0.0.0.0/ {print "route del -net "$1" gw "$2";"} + ') + + change_state network "$ifc" gateway "$router" + } + + # CIDR STATIC ROUTES (rfc3442) + [ -n "$staticroutes" ] && set_classless_routes $staticroutes + [ -n "$msstaticroutes" ] && set_classless_routes $msstaticroutes + + # DNS + old_dns=$(uci_get_state network "$ifc" dns) + old_domain=$(uci_get_state network "$ifc" dnsdomain) + user_dns=$(uci_get "network.$ifc.dns") + [ -n "$user_dns" ] && dns="$user_dns" + + [ -n "$dns" ] && [ "$dns" != "$old_dns" -o -n "$user_dns" ] && { + echo "udhcpc: setting dns servers: $dns" + add_dns "$ifc" $dns + + [ -n "$domain" ] && [ "$domain" != "$old_domain" ] && { + echo "udhcpc: setting dns domain: $domain" + sed -i -e "${old_domain:+/^search $old_domain$/d; }/^search $domain$/d" "${RESOLV_CONF}" + echo "search $domain" >> "${RESOLV_CONF}" + change_state network "$ifc" dnsdomain "$domain" + } + } + + [ -n "$ifc" ] || return + + # UCI State + change_state network "$ifc" lease_server "$serverid" + change_state network "$ifc" lease_acquired "$(sed -ne 's![^0-9].*$!!p' /proc/uptime)" + change_state network "$ifc" lease_lifetime "$lease" + [ -n "$ntpsrv" ] && change_state network "$ifc" lease_ntpsrv "$ntpsrv" + [ -n "$timesvr" ] && change_state network "$ifc" lease_timesrv "$timesvr" + [ -n "$hostname" ] && change_state network "$ifc" lease_hostname "$hostname" + [ -n "$timezone" ] && change_state network "$ifc" lease_timezone "$timezone" + + + # Hotplug + env -i ACTION="$1" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface +} + + +scan_interfaces +applied= +for ifc in $interfaces __default; do + if [ "$ifc" = __default ]; then + ifc="" + [ -n "$applied" ] && continue + else + config_get ifname "$ifc" ifname + [ "$ifname" = "$interface" ] || continue + + config_get proto "$ifc" proto + [ "$proto" = "dhcp" ] || continue + applied=true + fi + + case "$1" in + deconfig) + ifconfig "$interface" 0.0.0.0 + [ -n "$ifc" ] && { + env -i ACTION="ifdown" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface + + config_get device "$ifc" device + config_get ifname "$ifc" ifname + config_get aliases "$ifc" aliases + uci_revert_state network "$ifc" + [ -n "$device" ] && uci_set_state network "$ifc" device "$device" + [ -n "$ifname" ] && uci_set_state network "$ifc" ifname "$ifname" + [ -n "$aliases" ] && uci_set_state network "$ifc" aliases "$aliases" + } + ;; + renew) + setup_interface update + ;; + bound) + setup_interface ifup + ;; + esac +done + +# user rules +[ -f /etc/udhcpc.user ] && . /etc/udhcpc.user + +exit 0 |